| Message ID | 20230118112136.213061-1-s-vadapalli@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [net-next] net: ethernet: ti: am65-cpsw: Handle -EPROBE_DEFER for Serdes PHY | expand |
On 18/01/2023 13:21, Siddharth Vadapalli wrote: > In the am65_cpsw_init_serdes_phy() function, the error handling for the > call to the devm_of_phy_get() function misses the case where the return > value of devm_of_phy_get() is ERR_PTR(-EPROBE_DEFER). Proceeding without > handling this case will result in a crash when the "phy" pointer with > this value is dereferenced by phy_init() in am65_cpsw_enable_phy(). > > Fix this by adding appropriate error handling code. > > Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> > Fixes: dab2b265dd23 ("net: ethernet: ti: am65-cpsw: Add support for SERDES configuration") > Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> > Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com> Reviewed-by: Roger Quadros <rogerq@kernel.org>
Hello: This patch was applied to netdev/net-next.git (master) by Jakub Kicinski <kuba@kernel.org>: On Wed, 18 Jan 2023 16:51:36 +0530 you wrote: > In the am65_cpsw_init_serdes_phy() function, the error handling for the > call to the devm_of_phy_get() function misses the case where the return > value of devm_of_phy_get() is ERR_PTR(-EPROBE_DEFER). Proceeding without > handling this case will result in a crash when the "phy" pointer with > this value is dereferenced by phy_init() in am65_cpsw_enable_phy(). > > Fix this by adding appropriate error handling code. > > [...] Here is the summary with links: - [net-next] net: ethernet: ti: am65-cpsw: Handle -EPROBE_DEFER for Serdes PHY https://git.kernel.org/netdev/net-next/c/854617f52ab4 You are awesome, thank you!
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 5cac98284184..c696da89962f 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -1463,6 +1463,8 @@ static int am65_cpsw_init_serdes_phy(struct device *dev, struct device_node *por phy = devm_of_phy_get(dev, port_np, name); if (PTR_ERR(phy) == -ENODEV) return 0; + if (IS_ERR(phy)) + return PTR_ERR(phy); /* Serdes PHY exists. Store it. */ port->slave.serdes_phy = phy;
In the am65_cpsw_init_serdes_phy() function, the error handling for the call to the devm_of_phy_get() function misses the case where the return value of devm_of_phy_get() is ERR_PTR(-EPROBE_DEFER). Proceeding without handling this case will result in a crash when the "phy" pointer with this value is dereferenced by phy_init() in am65_cpsw_enable_phy(). Fix this by adding appropriate error handling code. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Fixes: dab2b265dd23 ("net: ethernet: ti: am65-cpsw: Add support for SERDES configuration") Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com> --- This issue has been reported at: Link: https://lore.kernel.org/r/CAMuHMdWiXu9OJxH4mRnneC3jhqTEcYXek3kbr7svhJ3cnPPwcw@mail.gmail.com/ drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 ++ 1 file changed, 2 insertions(+)